<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
<script>
    var input = {
        h3: {
            parent: 'h2',
            name: '副总经理(市场)'
        },
        h1: {
            parent: 'h0',
            name: '公司机构'
        },
        h7: {
            parent: 'h6',
            name: '副总经理(总务)'
        },
        h4: {
            parent: 'h3',
            name: '销售经理'
        },
        h2: {
            parent: 'h1',
            name: '总经理'
        },
        h8: {
            parent: 'h0',
            name: '财务总监'
        },
        h6: {
            parent: 'h4',
            name: '仓管总监'
        },
        h5: {
            parent: 'h4',
            name: '销售代表'
        },
        h0: {
            parent: '',
            name: 'root'
        }
    };
    console.log('input:',input);
    function plain2Tree(obj) {
        var res, p;
        for (var key in obj) {
            p = obj[key].parent;
            if (p) {
                obj[p][key] = obj[key];
            } else {
                res = obj[key];
            }
        }
        return res;
    }
    console.log('res:',plain2Tree(input));


</script>
</body>
</html>